Music-leaf turner.



PATENTED sEPT. 1, 1908.

A. P. HILDEBRANDT. MUSIC LEAP TURNER. APPLICATION FILE]; 1130.30, 1907.

2 SHEETS-SHEET 1.

cum} its No. 897,534. PATENTED SEPT. 1, 1908. A. P. HILDEBRANDT.

MUSIC LEAP TURNER.

. APPLICATION FILED DEO.30,1907.

2 SHEETS-SHEET 2.

wit'umaeo mm. are

AUGUST r. HILDEBRANDT, or PHILADELPHIA, PENNSYLVANIA.

' MUSIC-LEAF TURNER.

Specification of Letters Patent.

Patented Sept. 1, 1908.

Application filed December 30, 1907. Serial No. 408,465.

To all whom it may concern:

Be it known that I, AUGUST P. HILDE- BRANDT, a citizen of the UnitedStates, residing at Philadelphia, in the county of Philadelphia andState of Pennsylvania, have 1nvented certain new and useful Improvementsin Music-Leaf Turners, of which the following is a specification.

This invention relates to music leaf turners, the object being toprovide a music leaf turner which is so constructed that it can bereadily attached to a music stand or piano, and the arms connected tothe leaves of the music book or sheet of music, so that by simplypressing the bulb with I the foot, the eaves can be turned insuccession, whereby the musician will not have to stop to turn theleaves.

Another object of my invention is, to pro-. vide adjustably mountedoperating arms, so

that they can be readily adjusted to suit any size book or sheet ofmusic.

Another object of my invention is, to provide very novel means forholding these arms in a locking position,'so that when they arereleased, they will be carried over to the other side, carrying withthem the sheets of music. I

Another object of my invention is, to provide very novel means foroperating the tripping arms, which will automatically move step bystep,'so as to engage the locking'levers in succession.

Another object of my invention is, to provide very novel means foradjusting, the means for giving the step like motion to the operatingarm, whereby the. arm can be readily moved back into its originalosition.

These objects are obtained bv t e novel arrangement and construction ofparts hereinafter fully described and shown in the ac-' companyingdrawings in which:

Figure 1, is a perspective view of my improved music leaf turner,showing the application of the same toa music stand, supporting a book,the arms being connected to the leaves desired to be turned. Fig. 2, isa transverse section through the casing of the music leaf turner, theoperating mechanism being shown in elevation. Fig. 3, is a longitudinalsection through the casing of my improved music leaf turner, the o)erating mechanism being in elevation, and, ig. 4, is'a perspective viewof tripping arm, and means for moving said arms step by step.-

In the drawings A, indicates an ordinary music stand provided with theusual book rack on whichis secured a book, which is held thereon by anelastic band B, one end of which is connected to the book rack, and

of the casing C, of my improved music leaf turner, which is providedwith a plurality of slots inits top, through which arms D, extend, whichare carried by disks E, loosely mounted on a longitudinal shaft F,secured in the ends of the casing, eachdisk being provided with an eyeE, through which a spring G, extends, which is secured at its inner endin a bore formed inthe shaft, and is provided at its outer end with aneye G the other to an eye formed in the upper end which fits around thearm D, whereby the arms will be thrown over in a reverse position fromwhat is shown in Fig. 2 when released, as will be hereinafter fullydescribed, the disks being heldin their proper position on the shaft inrespect to the slots by collars secured on the shaft and the springs.

Slidably mounted on the arms D, are sleeves H, provided with set screwsfor looking them in their adjusted position, and havingrods I, extendingupwardly therefrom on which are adjustably mounted sleeves J, providedwith fingers K, carrying clasps K, for attaching the fingers to theleaves of the book, the sleeves J, being secured in their .adjustedposition by thumb screws, and it will be seen by this arrangement, therods and fingers can be adjusted to suit any size book, or sheet ofmusic.

The disks E, are provided with cam lips E adapted to be engaged by theangle end L, of angle locking levers L, which are' loosely mounted on alongitudinal shaft L, secured in the casing, the angle ends of the 1lever beingheld into engagement with the shoulder of the cam lips by thecounter-balanceweight of the horizontal member L of the lever L, and itwill be seen that as these levers are thrown out of engagement with thecam lips, the spring will rotate the disk and carry with it the arms forturnin the leaf or page. For operating these levers one at a time, as itis desired to turn the leaves of the book, I provide a trippingmechanism as shown at M, which comprises a tripping arm N, having anangle end, which is carried by a collar N, provided with a notch intowhich fits the longitudinal rib of a shaft 0, which is mounted in thebearings secured to the ends 11 of the casing, whereby the collar canslide on the shaft, but is prevented from being rotated thereon.

Secured on the shaft 0, is a sleeve P, which is provided with adownwardly projecting finger P, which is connected to a downwardlyprojecting finger 0, carried by the shaft 0, adjacent its other end, thefingers being connected together by a thin strip of aluminium O, for thepurpose hereinafter fully described.

Secured to the sleeve P, is one end ofa coil spring Q, which surroundsthe shaft 0, and has its other end connected to the collar N, of thetripping finger N, whereby the tendency of the tripping arm is to movetowards the sleeve P. a

Extending upwardly from the collar N, is an arm R, which extends betweena pair of parallel shafts SS, mounted in bearings, secured to the endsof the casing, the shafts being provided with inwardly projectingfingers S S the fingers of the shaft S ,being longer than the fingers Sof the shaft S, and these fingers are so arranged in respect to thelocking levers L, that when the arm R, is in engagement with the firstone of the fingers 8*, the tripping arm will be directly under the firstlocking lever, whereby when said tripping arm is forced upwardly, theangle end of the locking lever will be thrown out of engagement with thecam lip, so as to release the disk which will carry over with it thefirst arm of the series of arms D. As the arm R, is oscillated by themovement of the tripping arm upwardly, it will be thrown out of the pathof the first finger of the series of fingers S which will release thecollar, so as to allow the spring to draw it into engagement with thefirst finger of the series of fingers S and as the arm swings back intoposition, it will be thrown out of engagement with the finger S intoengagement with the second finger of the series of fingers S which willbring the tripping arm under the next one of the locking levers, it ofcourse being understood, that this operation is continued until all ofthe locking levers have been tripped.

Secured on the shafts S-S, are a pair of gears TT, mesh-ing witheachother, the gear T, being provided with a crank arm T to which isconnected an operating rod T which extends out through a slot formed inthe casing, and by means of which the fingers can be thrown u into avertical position, out of the path of tfie arm R.

Extending outwardly horizontally from the collar N, is an operatin rod Nwhich extends through a longitudinal slot in the side of the casing, andit will beseen that when the fin ers are thrown up into a verticalposition, y pushing or drawing the rod forward, the tripping arm can bebrought back into position, and locked by turning the fingers downagain. it of course being understood, that the arms D, had been thrownover intoa set position and locked by the locking levers. I

For swinging the tripping arm N, I secure in the casing opposite thestrip of aluminium O", a casing U, provided with a plunger U, adapted toengage the strip of aluminium O and for operating the plunger, I connecta flexible tube V, which extends down along the standard of the musicstand in eyes, and is provided with a rubber bulb V, at its end, wherebywhen said bulb is pressed with the foot, the plun er U, will be forcedinto ongagement with the stri) 0 whereby the shaft 0, will beoscillated, so as to swing the tripping arm up into engagementwith thelocking lever.

From the foregoing description it will be seen that I have provided avery novel music leaf turner, which is exceedingly simple and cheap inconstruction, and one which is pro- Vided with very novel means formoving the tripping arm step by step into engagement with the lockinglevers.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is V 1. A music leaf turner comprising aplurality of spring actuated arms, means for locking said arms, amovable tripping arm adapted to engage said locking means, and means forimparting a step by step motion to said tripping arm.

2. A music leaf turner comprising a plurality of spring actuated looselymounted disks carrying arms, locking levers for en gaging said disks, atripping arm for engaging said locking lever, and means for imparting astep by step motion to said tripping arm.

3. The combination with a casing provided with a plurality of slots, ofa shaft secured longitudinally in said casing, a plurality of springactuated disks loosely mounted on said shaft provided with cam lips,arms carried by said disks extending out through said slots, lockinglevers for engaging said cam lips, a tripping arm for engaging saidlevers in succession, and means for operating said tripping arm.

4. The combination with a casing, provided with a plurality of slots, ofa longitudinal shaft mounted in said casing, a lurality of disks looselymounted on said s aft carrying arms extending out throughsaid slots,springs for o crating said disks, levers for locking said d isks, aslidably mounted tripping arm for ,engaging said levers, and means forthrowing said tripping arm into engagement with said levers, togetherwith means for sliding said tripping arm, for the purpose described.

, 5. In a music leaf turner, the combination with a casing provided witha lurality of slots, and havlng a longitudinal shaft arranged therein,of a plurality of disks provided with cam lips loosely mounted on saidshaft, arms carried by said disks extending out through said slots, rodsadjustably mounted on said arms, fingers adjustably mounted on saidrodscarrying clasps, looking levers for engaging said cam lips, andmeans for disengaging said locking levers from said cam li s insuccession.

6. In a music eaf turner, the combination with a plurality of springactuated disks carrying arms, of locking levers engaging said disks, atripping arm for engaging said looking levers, means for throwing saidarm into engagement with said levers, together with means for impartinga step by step move-" ment to said tripping arm, whereby saidtripping'arm will engage the locking levers in succession. I

7. In a music leaf turner, the combination with a casing provided with aplurality of slots, of alongitudinal shaft mounted in said casing,

a plurality of disks loosely mounted on said shafts, springs foroperating said disks, arms carried by said disks extending out throughsaid slots, provided with means for attaching it to the leaves of thebook, locking levers for engaging said disks, a shaft mounted in saidcasing carrying a tripping arm, extending under said levers, means forrockiw said shaft, together with means for moving said tripping arm steby step on said shaft.

8. In a music lbaf turner, the combination with a shaft, of a pluralityofdisks mounted &

on said shafts, carrying arms extending out -carried by said collar,shafts arranged on each side of said arm, rovided with inwardlyprojecting fingers, an means for rocking said tripping arm, whereby saidfingers will be engaged in succession.

9. In a music leaf turner, the combination with a casing provided withaplurality of slots, and having a longitudinal shaft secured therein, ofa plurality of s rin actuated disks provided with cam fips ooselymounted on said shaft, arms secured to said disks extending out throughsaid slots carrying rods having fingers adjustably mounted thereon,provided with clamping means, pivoted locking levers, ada ted to engagesaid cam lips, a trippingarm or disengaging said locking levers fromsaid cam lips on the disk, pneumatic means for operating said trippingarm, together with means for moving said tripping arm into engagementwith said locking levers in succession.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

AUGUST P. HILDEBRANDT.

Witnesses:

CHAS. E. PoTTs, R. H. KRENKEL.

